已知向量a=(sinx,1)向量 b=(t,x)若f(x)=向量a·向量b,在区间(0,π/2)上是增函数,则实数t的范围是?未学导数
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![已知向量a=(sinx,1)向量 b=(t,x)若f(x)=向量a·向量b,在区间(0,π/2)上是增函数,则实数t的范围是?未学导数](/uploads/image/z/6797488-40-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%3D%28sinx%2C1%29%E5%90%91%E9%87%8F+b%3D%28t%2Cx%29%E8%8B%A5f%28x%29%3D%E5%90%91%E9%87%8Fa%C2%B7%E5%90%91%E9%87%8Fb%2C%E5%9C%A8%E5%8C%BA%E9%97%B4%EF%BC%880%2C%CF%80%2F2%29%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0%2C%E5%88%99%E5%AE%9E%E6%95%B0t%E7%9A%84%E8%8C%83%E5%9B%B4%E6%98%AF%3F%E6%9C%AA%E5%AD%A6%E5%AF%BC%E6%95%B0)
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